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Only elements have atomic numbers. Water is a compound, therefore it has no atomic number.
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What is the atomic number of H2O?
Atomic number is a property of an atom (An Element) and not a chemical compound. Water is a compound and thus it can not have any atomic number. Atomic number is the number of protons present in the nucleus of the atom of an element. e.g. Carbon has six protons in its nucleus, therefore its atomic number is six. However, sodium chloride has two different elements as its constituents and therefore one can not determine its atomic number.
This element has an atomic number that is double the atomic number of silicon?
this elemnt has an atomic number that is double the atomic number of silicon?
Which element has an atomic number between 27 and 31?
Atomic number 27 : Cobalt Atomic number 28 : Nickel Atomic number 29 : Copper Atomic number 30 : Zinc Atomic number 31 : Gallium
What is the number of molecules in 16.75 grams of H2O?
301.8g H2O
How do you know the number of neutrons an atom has?
You subtract the atomic number from the mass number.
What is the atomic mass and number for H2O?
The atomic mass of H2O is 18.01528amu. Each hydrogen atom has a mass of 1.00794amu and the oxygen atom has a mass of 15.9994amu. There is not atomic number for H2O, as it is a compound, not an element. H: 2 x 1.00794amu = 2.01588amu O: 1 x 15.9994amu = 15.9994amu Total = 18.01528amu
What is the atomic number of H2O?
Atomic number is a property of an atom (An Element) and not a chemical compound. Water is a compound and thus it can not have any atomic number. Atomic number is the number of protons present in the nucleus of the atom of an element. e.g. Carbon has six protons in its nucleus, therefore its atomic number is six. However, sodium chloride has two different elements as its constituents and therefore one can not determine its atomic number.
What is the mass number of water?
Elements, as listed on the periodic table have atomic numbers, whereas molecules, like water (H2O) have molecular weight, which is the sum of all of the atomic masses of the atoms in a molecule. Each of the components of H2O have an atomic number: Hydrogen has an atomic number of 1 (because it has 1 proton); Oxygen has an atomic number of 8 (it has 8 protons). So, if a person were to try to assign an atomic 'number' to H2O they would likely come up with 2 x 1 (for the 2Hydrogens) + 8 (for the Oxygen) = 10! Now, because an atomic 'number' indicates an element on the periodic table, we'd have to look at the periodic table...and find that 10 is Ne (Neon). As you can see, this would be completely wrong as water is NOT neon! So, water does not have an atomic number. It does, however have a molecular weight! The molecular weight of H2O can be calculated by referring to the periodic table, where we would find that Hydrogen has a weight of 1.0079 grams per mol and Oxygen has an atomic weight of 15.9994 grams per mol. The molecular weight of H2O can be calculated by figuring out how many of each atom is in the molecule, and then multiplying each by it's weight. So: Hydrogen has an atomic weight of 1.0079 and there are two of them in H2O: 1.0079 x 2 = 2.0158 grams per mole Oxygen has an atomic weight of 15.9994 and there is one in H20: 15.9994 x 1 = 15.9994 grams per mole Add them up! 2.0158 + 15.9994 = 18.0152 grams per mole H20 has a molecular 'weight' of 18.152 grams!
How many moles are there in 235 grams of H2O?
For this you need the atomic (molecular) mass of H2O. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel. H2O=18.0 grams235 grams H2O / (18.0 grams) = 13.1 moles H2O
Find the molar mass of 7H2O?
Atomic weight of hydrogen is 1,008. Atomic weight of oxygen is 15,999. The sum is the molar mass of H2O: 18,015 g. And 7 H2O is 126,105 g.
What is the atomic molecule of water?
1 Hydrogen2 + 1 Oxygen H2O
Are atoms with the same atomic number atoms of the same element?
yes. Isotopes of an element have the same number of protons, thus electorns, thus the same chemical properties. Where isotpes differ is in the number of neutrons. Consider hydrogen, atomic number 1, atomic weight 1, 1 proton, 1 electron vs duterium, atomic number 1 atomic weight 2, 1 proton, 1 electron, 1 neutron. H2O = water D2O = heavy water
What is the number of protons in the neucleus called?
the answer is that it is called a atomic number.
Atomic number in the atomic nucleus?
The atomic number is equal to the number of the protons in the atomic nucleus.
The number of neutrons in an atom can be found by subtracting the atomic number from the?
Atomic weight in atomic mass units = the number of protons + the number of neutrons. The number of protons is your atomic number. Subtract that from the atomic weight for the number of neutrons.
This element has an atomic number that is double the atomic number of silicon?
this elemnt has an atomic number that is double the atomic number of silicon?
What is the number of neutrons in an atomic number?
Subtract the atomic number from the atomic weight.
